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齒輪連桿凸輪組合式栽植機(jī)構(gòu)仿真與試驗(yàn)
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“十二五”國家科技支撐計(jì)劃資助項(xiàng)目(2013BAD08B03)、江蘇省科技支撐計(jì)劃資助項(xiàng)目 (BE2012381)和江蘇高校優(yōu)勢學(xué)科建設(shè)工程資助項(xiàng)目(蘇財(cái)教(2011) 8號)


Simulation Analysis and Experiment for Gear-linkage-cam Combination Planting Mechanism
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    摘要:

    針對旱地移栽機(jī)打穴栽植需要,,設(shè)計(jì)了一種齒輪連桿凸輪組合式栽植機(jī)構(gòu),,該機(jī)構(gòu)由齒輪機(jī)構(gòu)、連桿機(jī)構(gòu),、槽型凸輪和鴨嘴式打穴栽植器等幾部分組成,。通過建模軟件Pro/E建立了該栽植機(jī)構(gòu)的虛擬樣機(jī)模型,并將虛擬樣機(jī)模型導(dǎo)入剛體運(yùn)動仿真軟件ADAMS中。仿真分析了運(yùn)動參數(shù)λ在小于1,、等于1和大于1情況下栽植機(jī)構(gòu)前后鴨嘴的運(yùn)動軌跡,,結(jié)果表明只有在λ等于1時(shí)栽植機(jī)構(gòu)的運(yùn)動才能滿足零速投苗運(yùn)動條件要求,栽植時(shí)可以得到較好的植苗狀態(tài),,驗(yàn)證了參數(shù)選擇和機(jī)構(gòu)設(shè)計(jì)的正確性和合理性,。以自制全自動蔬菜移栽機(jī)為試驗(yàn)樣機(jī),新型鴨嘴式栽植機(jī)構(gòu)為研究對象,,分別從栽植均勻度,、缽苗直立度兩個(gè)方面進(jìn)行了試驗(yàn)。試驗(yàn)結(jié)果表明:株距誤差率僅為2.22%,, 缽苗直立度全為優(yōu)良,,表明所設(shè)計(jì)的鴨嘴式栽植機(jī)構(gòu)能夠滿足栽植要求。

    Abstract:

    To meet the dry land punch planting needs, a gear linkage cam combination planting mechanism which is composed of planetary gear, planetary carrier, connecting rod, groove cam and plant apparatus was designed. Through the modeling software Pro/E, the virtual prototype model of the plant mechanism was established and it was imported into the rigid kinematics simulation software ADAMS. Simulating the trajectories of the two duck-billed when the motion parameter λ in different conditions as λ<1, λ=1 and λ>1, the results showed that only when λ=1 the motion of plant mechanism could meet the zero velocity for seedling motion requirements and get better seeding status, testing the correctness and rationality of the parameter selection and mechanism design. Taking the self-made automatic vegetable transplanter as experimental prototype and planting mechanism as the research object, the experiment has carried out in two aspects: the planting uniformity and the upright degree of pot seedling. Experiments showed that seedling distance error rate was only 2.22% and seedling perpendicularity was good, proved that the designed planting mechanism could meet the planting requirements.

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付鵬洋,胡建平,劉 發(fā),嚴(yán)宵月.齒輪連桿凸輪組合式栽植機(jī)構(gòu)仿真與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2014,45(S1):52-56. Fu Pengyang, Hu Jianping, Liu Fa, Yan Xiaoyue. Simulation Analysis and Experiment for Gear-linkage-cam Combination Planting Mechanism[J]. Transactions of the Chinese Society for Agricultural Machinery,2014,45(S1):52-56.

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  • 收稿日期:2014-06-26
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  • 在線發(fā)布日期: 2014-11-15
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